Home / 120,669,130.20-166,606,711.80-112,959,692.76

Finding the Fourth Proportional to 120,669,130.20, 166,606,711.80 and 112,959,692.76

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Solution

The fourth proportional to 120,669,130.20, 166,606,711.80 and 112,959,692.76 is: 155,962,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,669,130.20 : 166,606,711.80 = 112,959,692.76 : x
  2. Step 2: Convert to fraction form
    120,669,130.20/166,606,711.80 = 112,959,692.76/x
  3. Step 3: Cross multiply
    120,669,130.20x = 166,606,711.80 × 112,959,692.76
  4. Step 4: Simplify right side
    120,669,130.20x = 18,819,842,976,681,868
  5. Step 5: Solve for x
    x = 18,819,842,976,681,868/120,669,130.20
  6. Step 6: Final answer
    x = 155,962,365.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.